PETBOCEPHALUS. 35 



9 Sanhur, near Beni Souef. — Loat, 5.9.99. 



7 Lahun, on the Bahr Yusu£, Fayum. — Loat, 5.10.99. 



5 Between Assiut and Abu Tig. — Loat, 1.12.99. 



2 Luxor.— Loat, 26.10.00, 3.11.00. 



3 At a regulator near Luxor. — Loat. 8.10.00. 

 1 Between Luxor and Assuan. — Loat, 9.00. 



7 Near Assuan.— Loat, 30.12.99, 27.8.00, 12.9.00. 



8 Khartum.— Petherick, 1862. 

 1 Omdurman.— Loat, 20.12.00. 



10 Wad Medine, Blue Nile.— Loat, 7.10.01. 



1 Kosaires, Blue Nile. — Capt. Flower, 6.05. 



1 Shederah, White Nile.— Loat, 31.12.00. 



4 Between Khartum and Sobat li. — Zaphiro, 1-2.04. 

 1 In a kore at Fashoda. — Loat, 3.01. 



1 Tewfikyeh, White Nile.— Loat, 22.1.01. 



2 Yo R., Lake Chad.— Capt. Gosling, 1904. 



1 Jebba, Upper Niger.— Capt. G. F. Abadie, 1899. 



Females appear to be much more common than males- A great number obtained 

 at Wasta at the end of August had the abdomen distended with roe evidently just 

 ready for shedding, each egg measuring about 2 millimetres in diameter. Other 

 breeding specimens were obtained at Sanhur and Beni Souef in the beginning of 

 September. 



Petrocephalus bane is probably the most common species of Mcrmyr in the Lower 

 Nile, or rather, perhaps, that which is most easily caught by the fishermen, who 

 confound it with P. bovei and with Marcusenius isidori. The following list of native 

 Lames is furnished by Mr. Loat: — "Bona" (*>y), at Cairo and at Barrage N. of 

 Cairo; "band" (lb), at Assiut and Cairo; " booand" (li^j), at Assiut; "sow" (y») 9 

 also known by this name at Cairo and at Barrage N. of Cairo ; " buma " (<w), 

 at Kafr-el-Zayat ; " rhoaser" ( ; ^), at Assiut; " rho aster -el-hag er" (^ **>£)> at 

 Assiut and Omdurman (at Assiut the word " band " refers to big specimens, and 

 "rkoaser" and " rhoaster-el-hager" to small ones); " rhat-el-moose" ( ^^11 ol,i), 

 sometimes known by this name in Egypt; " hager" (js**), at Beni Souef, Lahun on 

 the Bahr Yusuf in the Fayum ; " ar-min-ya " (Uju/), at Assuan ; " bed-doi-yar" on the 

 Blue Nile. 



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